#20324: MIP backends: Unify add_col, add_variable
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Reporter: mkoeppe | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-7.2
Component: numerical | Keywords: lp
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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`add_col` and `add_variable` both add a variable to the problem; but
`add_col` only allows to add a column with no name; whereas `add_variable`
only allows to add a column with no coefficients.
There should be one function (`add_variable`, probably - see #20296 for a
possible interface) that can do both; should then deprecate `add_col`.
Note that `add_col` is not used by `MixedIntegerLinearProgram`; it is only
used in doctests of the backends.
(Also compare with `add_linear_constraint`, which takes a zipped
index/coefficient list, whereas `add_col` takes two parallel lists.)
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Ticket URL: <http://trac.sagemath.org/ticket/20324>
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